Development of an Alternative Management Method of Meloidogyne incognita Parasitizing (Brassica oleracea) Cabbage: Bixa orellena Extracts as Reducing Agent in Silver Nano Particles Preparation
Development of an Alternative Management Method of Meloidogyne incognita Parasitizing (Brassica oleracea) Cabbage: Bixa orellena Extracts as Reducing Agent in Silver Nano Particles Preparation
Oluwatoyin Adenike Fabiyi* and Abigail Abosede Olojede
ABSTRACT
Plant parasitic nematodes are salient pests of cabbage plants often controlled with agrochemicals. This procedure is laden with environmental pollution which calls for agro-biocides development in the control of plant parasitic nematodes (PPNs). Screenhouse trials were set up to assess the effectiveness of silver nanoparticles on Meloidogyne incognita populations in cabbage plants using aqueous extracts from Bixa orellena as reductant. Analysis of variance (ANOVA), statistical method was explored using GenStat 5.32 to achieve this. Formation of nanoparticles (NPs) was confirmed by reaction solution colour change, Fourier Transform Infra-red and Scanning Electron Microscopy (FTIR and SEM). Strong peaks on the FTIR spectrum were observed at 3356, 3360 and 1637 cm-1, indicating that amines are the reducing and stabilising factor in the formation of AgNP. The Energy Dispersive X-ray Analysis (EDXA) projected silver as the principal extant metal. At 5% level of significance, there was higher than control level of growth and sufficiently higher yield, observed in cabbage plants administered with the highest concentration of B. orellana AgNPs at (150 mMole) 75 mL/20Kg soil. Similarly, there was significant reduction (at 5%) in soil and root nematode population at the above volume of application against (50 mMole) 25mL. Thus, we suggest that green synthesis of AgNPs could serve as an eco-friendly method of combating nematode pests of cabbage.
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